What is the range of f(x)=x^2-2x-6

Need on this geometry question. explain how you did it.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e. g. 98.7654). x f(x) 0 1 2 3

Sketch one cycle if the cosine function y=2cos2theta